@hilde:
I'm aware of the presence of L. Young and Dave Holland on the Hendrix, but again, harmonically and rhythmically, what they're actually playing is, to my ears, a Blues/Rock jam, not Jazz. I guess Miles really blurred the categories, but even if you listen to a very bluesy "long form" Miles recording, such as Jack Johnson's "Right Off", the players are employing intervals, harmonic shadings and rhythmic devices that separate it from Blues/Rock. And when I say "separate it", I don't mean in some sort of pedantic, scholarly sense-- I mean, you simply won't find this sort of sophistication in the playing of Blues/Rockers. Just the number and variety of chord voicings that McLaughlin utilizes in his accompaniment far exceeds what you'll encounter in the 99% of Blues/Rock players. The way I look at it, it's all about the breadth and depth of the language employed. At the same time time, I don't claim to be an expert nor do I dispute your right to disagree.
I was lucky to catch Holland live five times: three times with his quintet, once with his big band and once with Gateway. The latter's the only time I've seen DeJohnette or Abercrombie. Sadly, the venue where I saw these shows (Yoshi's, in Oakland, CA) and quite a few others no longer books Jazz. At those Jazz shows, it was mostly old white guys-- some with their wives. Other genres bring in considerably more money.
